Abdominal exercise board



FIG. 1 is a front perspective view of the abdominal exercise board showing my new design;

FIG. 2 is a rear view in elevation of the abdominal exercise board of FIG. 1;

FIG. 3 is a front view in elevation of the abdominal exercise board of FIG. 1;

FIG. 4 is a side view in elevation as seen from the right-hand side of the abdominal exercise board of FIG. 1;

FIG. 5 is a side view in elevation as seen from the left-hand side of the abdominal exercise board of FIG. 1;

FIG. 6 is a top plan view of the abdominal exercise board of FIG. 1; and,

FIG. 7 is a bottom plan view of the abdominal exercise board of FIG. 1. 

The ornamental design for an abdominal exercise board, as shown and described. 